| | |
| | | |
| | | import java.math.BigDecimal; |
| | | import java.math.RoundingMode; |
| | | import java.time.LocalDateTime; |
| | | import java.time.temporal.ChronoUnit; |
| | | import java.util.Objects; |
| | | import java.util.regex.Pattern; |
| | | |
| | |
| | | return hourDiff.doubleValue(); |
| | | } |
| | | |
| | | public static void main(String[] args) { |
| | | System.out.println(getHourDiff("07:38","19:26")); |
| | | LocalDateTime localDateTime = LocalDateTime.of(2026, 3, 30, 7, 38); |
| | | LocalDateTime localDateTime2 = LocalDateTime.of(2026, 3, 30, 19, 26); |
| | | System.out.println(getTimeDifference(localDateTime,localDateTime2)); |
| | | } |
| | | |
| | | /** |
| | | * 计算两个时间的差值,返回 天:时:分:秒(每位两位数,支持跨天) |
| | | * @param startTime 开始时间 |
| | | * @param endTime 结束时间 |
| | | * @return 格式化后的时间差(例:01天 01时 30分 05秒) |
| | | */ |
| | | public static String getTimeDifference(LocalDateTime startTime, LocalDateTime endTime) { |
| | | // 1. 计算两个时间的**总毫秒差**(绝对值,避免时间顺序问题) |
| | | long totalMillis = Math.abs(ChronoUnit.MILLIS.between(startTime, endTime)); |
| | | |
| | | // 2. 定义时间单位常量(毫秒) |
| | | final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000; // 1天 |
| | | final long MILLIS_PER_HOUR = 60 * 60 * 1000; // 1小时 |
| | | final long MILLIS_PER_MINUTE = 60 * 1000; // 1分钟 |
| | | final long MILLIS_PER_SECOND = 1000; // 1秒 |
| | | |
| | | // 3. 拆分 天、时、分、秒 |
| | | long days = totalMillis / MILLIS_PER_DAY; |
| | | long remainingMillis = totalMillis % MILLIS_PER_DAY; |
| | | long hours = remainingMillis / MILLIS_PER_HOUR; |
| | | remainingMillis %= MILLIS_PER_HOUR; |
| | | long minutes = remainingMillis / MILLIS_PER_MINUTE; |
| | | long seconds = remainingMillis / MILLIS_PER_SECOND; |
| | | |
| | | // 4. 格式化:%02d = 整数补零到两位数(核心!满足精确到两位数要求) |
| | | return String.format("%02d天 %02d时 %02d分 %02d秒", days, hours, minutes, seconds); |
| | | } |
| | | |
| | | /** |
| | | * 校验时间格式是否为HH:mm |
| | | */ |